diff --git a/server/db/providers/arangodb/provider.go b/server/db/providers/arangodb/provider.go
index 6207acf..ac8aa4f 100644
--- a/server/db/providers/arangodb/provider.go
+++ b/server/db/providers/arangodb/provider.go
@@ -131,7 +131,7 @@ func NewProvider() (*provider, error) {
 
 	webhookLogCollection, _ := arangodb.Collection(nil, models.Collections.WebhookLog)
 	webhookLogCollection.EnsureHashIndex(ctx, []string{"webhook_id"}, &arangoDriver.EnsureHashIndexOptions{
-		Unique: true,
+		Sparse: true,
 	})
 
 	return &provider{